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GW190814: Gravitational Waves from the Coalescence of a 23 Solar Mass Black Hole with a 2.6 Solar Mass Compact Object
We report the observation of a compact binary coalescence involving a 22.2–24.3 M ⊙ black hole and a compact object with a mass of 2.50–2.67 M ⊙ (all measurements quoted at the 90% credible level).Expand
GW190412: Observation of a binary-black-hole coalescence with asymmetric masses
We report the observation of gravitational waves from a binary-black-hole coalescence during the first two weeks of LIGO's and Virgo's third observing run. The signal was recorded on April 12, 2019Expand
Superradiance is a radiation enhancement process that involves dissipative systems. With a 60 year-old history, superradiance has played a prominent role in optics, quantum mechanics and especiallyExpand
Tests of general relativity with the binary black hole signals from the LIGO-Virgo catalog GWTC-1
The detection of gravitational waves by Advanced LIGO and Advanced Virgo provides an opportunity to test general relativity in a regime that is inaccessible to traditional astronomical observationsExpand
Black holes as particle detectors: evolution of superradiant instabilities
Superradiant instabilities of spinning black holes can be used to impose strong constraints on ultralight bosons, thus turning black holes into effective particle detectors. However, very little isExpand
Massive spin-2 fields on black hole spacetimes: Instability of the Schwarzschild and Kerr solutions and bounds on the graviton mass
Massive bosonic fields of arbitrary spin are predicted by general extensions of the standard model. It has been recently shown that there exists a family of bimetric theories of gravity—includingExpand
Interaction between bosonic dark matter and stars
We provide a detailed analysis of how bosonic dark matter “condensates” interact with compact stars, extending significantly the results of a recent Letter [1]. We focus on bosonic fields with massExpand
Superradiance: Energy Extraction, Black-Hole Bombs and Implications for Astrophysics and Particle Physics
Introduction.- Superradiance in flat spacetime.- Superradiance in black hole physics.- Black holes and superradiant instabilities.- Black hole superradiance in astrophysics.- Conclusions and Outlook.
Black holes with massive graviton hair
No-hair theorems exclude the existence of nontrivial scalar and massive vector hair outside four-dimensional, static, asymptotically flat black-hole spacetimes. We show, by explicitly buildingExpand
Gravitational wave searches for ultralight bosons with LIGO and LISA
Ultralight bosons can induce superradiant instabilities in spinning black holes, tapping their rotational energy to trigger the growth of a bosonic condensate. Possible observational imprints ofExpand